Method and apparatus for molding thermosetting composite material
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United States of America Patent
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app pub date -
Jul 11, 2008
filing date -
Dec 26, 2003
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Abandoned
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Abstract
The invention provides a means for molding a prepreg material with a curved surface formed by impregnating carbon fiber or glass fiber with thermosetting resin. A prepreg sheet 100 is shaped into an L-shape, and an L-shape preformed channel member 120 is molded via a hot press unit 210 and a cold press unit 220. The curing rate of the perform is 30 to 60%. The preform 120 is molded into a curved member having a radius of curvature R.sub.1 in a secondary molding apparatus 300, which is then cut to form channel members 30. The curing rate thereof is 60 to 80%. Then, these channel members 30 used as reinforcements of a plate member are completely cured in an autoclave to form the molded product.
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